Kcl Definition and 99 Threads

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6...

The mentioned coordination complex has been prepared where KCl is a significant byproduct. The salt and the complex appear to be readily soluble in the same solvents. Despite the organic ligand (PDTA), it is not soluble in polar organic solvents, at least to a degree where it can be used for...

Hello everyone, I’m not a chemist at all, I studied physics which entailed a fair amount of chemistry in the learning but that was five lives ago. Nowadays I m a photographer, mostly editorial portraits but also fine arts. For my latest project I take pictures of a wide range of phenomena on...

I was thinking about doing KVL around the circuit at the right but I noticed when the switch opens, the current through the circuit at the right is not the same throughout -5 + Ic*2*1-^3 + Ic*10^3 = -Vc Ic is not the same around the right circuit so I am stuck....

Hi everyone, I'm new on this forum, I make potassium soap but there were changes in the regulations in my country (Argentina) and now there's a lot of slow bureaucracy needed to buy chemicals like KOH (the regulations are industry-focused but are affecting small businesses like mine) so...

Does anyone happen to know if Cl2+KH > KCl + HCl? And if it does, what is the reasoning? Is it because Cl2 prefers an ionic bond rather than a covalent bond?

I think there are 4 essential node. So we can write 3 KCL independent equations.

Hi. Let's say we have a circuit like that, and we want to find the Thevenin/Norton circuit from a and b points. So for Vth, we calculate the Voc, in which we remove the 2K ohm resistor and calculate the Voc. I calculated it correctly. But I have problem in calculating the Norton current. So in...

Another classmate and a web search show that the answers for this problem are v0 = -12 V, and i0 = 2.4 mA. This was done using KVL around the circuit. I should be able to reach the same answer using KCL but I haven't and I'm not sure why. Is it because the source isn't connected to ground and so...

Hi, I'm trying to solve this but it becomes difficult. I'm using KCL and I repalce ZL = j0,1ω (Ω) , ZC=... etc. Finding 3 equations with 3 unknown variables (plus the ω). And now is the time for Cramer's rule. I'm not sure if I should move on. What do you say ? I'm on track ? Thanks. ..

This is the circuit: I try with KVL: But the given answer is 6.66L33.67 Volts. So, I'm confused, any suggestions ?

I've been trying to use KVL/KCL here but I can't get any. The only thing I accomplished is R6 has 0V, 0A (KVL with its loop). All the other ones I can't get any? Thanks

I'm asked to solve for Vo for this equation. I've set the bottom node to be my reference node before applying nodal analysis. When included in the KCL equation for node at Vb, will the dependent voltage source 20iΔ be negative since the current through that element is leaving node C? Say, the...

Hello, I have pure KCl, but its natural radioactivity is low. I would like to increase it at least by a factor of 10. Is there any simple way (diy) for enriching the natural KCl in 40K? Alternatively, is there a compound with higher concentration of potassium (in volume) than KCl, and that you...

Homework Statement [/B]Homework Equations Can I use KCL at the central node? The Attempt at a Solution I tried KCL and got: 5cos0 + j 5sin0 + 10 cos 60 + j 10 sin 60 = (-I1) 5 + 5 + j 10 *1.732 / 2 = (-I1) 10 + j 5 * 1.732 = -I1 This gives 13.33 angle (220.89) Book answer is A Is the 5 and...

Homework Statement https://imgur.com/a/XySpV (If above image can't be seen.) Homework Equations KCL/KCL Rth=Vth/I The Attempt at a Solution Included in Screenshot. What I did was Open-Circuited the Load and use Nodal Analysis to find Voc Then, I shortcircuited the Load to find...

Homework Statement I have the following problem. Consider a circuit node where 3 sinusoidal currents with the same frequency converge, i1 i2 and i3. Knowing that the effective values of i1 and i2 are I1ef=1A and I2ef=2A. What can we say about I3ef: Options: $$(a)1A \leq I_{3ef} \leq 3A$$...

Homework Statement Homework EquationsThe Attempt at a Solution I have attempted and completed all questions. However, I am now trying part (b) with transforming the voltage source into a current source. I am unable to work out the current and I am unsure what to do next. I have included my...

In node analysis, after labeling the nodes. I don't know how to choose currents direction to apply KCL. it seems too complicated.. and I end up every time getting different answers the the solution sheet. I've an exam tomorrow. would be much appreciated if you could help me better understand the...

Homework Statement Ok so I remember learning KCL. Current is either entering or leaving the node. There's only two possible option. You can call entering the node positive or negative, you can call current exiting the node either positive or negative. As long as what you call entering the node...

【Moved from general forum. Homework template is missing.】 By KCL, -ID2 + (-I2) = 0 0 = ID2 + I2 Q1: Do you think this equation is correct? (i assume it is correct because it came from my professor's notes) Q2: Which node do you think this equation is used for making this equation with...

Homework Statement This is just one of the example problems in my book which is already solved for me, but I don't really understand their solution which I'll post here: They start out with assuming Vin is very negative, which makes D1 turn on and makes Vout=VD,on+Vin. THen they solve for...

Homework Statement I'm trying to find the voltage drop V1 of the following circuit, assuming Vin=1v, and for the life of me can't seem to get the right answer. Homework Equations KCL, Ohm's law The Attempt at a Solution I basically tried to use KCL at the top node, Vin/2+2V1 = V1/3 +...

Homework Statement In an example in our notes, he applies KCL at the bolded point in the circuit diagram. I have given a part of the KCL equation up there. That's the part I don't understand. Hes finding the current flowing through R1. I don't understand where he gets -vd-vin. Homework...

Homework Statement [/B] By expanding Krel / Kcl in powers of (v/c)^2, estimate the value of v/c for which Krel differs from Kcl by 10%. Homework Equations Kcl = classical Kinetic Energy = 1/2 m0 v^2 Krel = relative Kinetic Energy = (y-1) (m0 c)^2 The Attempt at a Solution I did a binomial...

Homework Statement The Question wants to find the Voltage Across The Current Source 2A and 5A Homework Equations KVL KCL Ohm's Law The Attempt at a Solution I tried to Using KVL and KCL for all Closed paths and node but I just Couldn't Figure how to relate them to find the voltage across the...

Currently working through a chapter on op amp circuits, fundamentals. Came upon this practice problem in the section on inverting op amps imgur link: http://i.imgur.com/2DrQLXk.png imgur link: http://i.imgur.com/7KRKzKC.png A working of this problem is not given. I got the correct answer...

Homework Statement Obtain the state equations in Matrix form for the two-input and one-output circuit shown in the figure below where the output is i_2. Homework Equations Ohm's Law, KVL, KCL The Attempt at a Solution Currents i1, i2, i3 assumed clockwise. Is there a better assumption I...

Homework Statement Assignment: Find V_2 using Nodal Analysis Homework Equations KCL U=R*I The Attempt at a Solution - Chosen reference node - Assigned node voltages - Applied KCL to each non-reference node - Solve system of equation - Checked equations for obvious errors See circuit drawing...

Homework Statement Find V0 and i0. Homework Equations Total current at each node is = 0. Total voltage around each loop is = 0. The Attempt at a Solution I can't seem to be able to analyze this circuit. That i0/4 is really messing me up. I am unsure how to apply both KCL and KVL on this...

Who do I know the direction of the current flow, when I make nodal analysis?

Homework Statement Find the voltage between a and b 2. Homework Equations KVL, KCL The Attempt at a Solution [/B] I did not understand how they have reach the result we just two equations, and how did they use KCL to get those equations

Homework Statement In my Intro to EE class we have a homework assignment with the following problem: I think I finished part a but want to make sure that I am doing the problem correctly before I move on to the next part. Homework EquationsThe Attempt at a Solution

My question applies to the case when the switch opens. By applying KCL in order to get a first order diff equation, the following problem arises when I choose different current directions (which shouldn't happen because KCL says the current direction doesn't matter because it will be fixed...

I'm confused, how is it that DC-converters work with respect to KCL in terms of conservation of charge? When a boost/buck converter would output low/high current output than input? I_in =/ I_out I'm teaching myself the basics of circuits, understood KCL and KVL, but this point is confusing...

Please help how Ve is calculated what i think is that it should be: -Ve=-Vee+IeRe; How Ve is taken positive please someone draw equivalent circuit for same

Homework Statement I'm in a lab and we have this circuit & question as part of the pre-lab The Attempt at a Solution I began trying to use nodal analysis to get Va & Vb & to then use Vab to get the voltage and then the current but after doing what you can see above, I stopped because I...

Homework Statement Here is the homework problem I was given: The Attempt at a Solution Above is the work that I began, however, I have an overwhelming feeling that I am incorrect and also I don't know how to continue to the next part/parts. Would someone please help me? Thank you H

Hi all! Just wondering if anyone has any or knows anyone with experience within the departments at KCL or UCL. I have an unconditional offer from both to study a part time masters degree, and to help me decide I am curious if anyone has any good/bad experiences with either, any help is greatly...

Hi everyone, just a quick post regarding the above. I have been accepted by both onto a part time (two year) masters degree. I got the KCL offer first and accepted but paid a £500 deposit that I will not get back if I switch. Even though I can't afford it I will switch if I decide UCL is a...

Homework Statement thevenin's equvalent circuit of the network Homework Equations thevenin's voltage thevenin's impedance The Attempt at a Solution using nodal analysis i tried to find thevenin voltage but the dependent source and the dependent variable troubling me!

Homework Statement Homework Equations [/B]The Attempt at a Solution

Which method is used to find that voltage v?

Homework Statement I need to find the voltages (if any) and currents of these circuit, but particularly Io I do know that I have to use KCL bot I don't know how, can somebody help me with a node or somethinghttps://www.physicsforums.com/attachments/c2-jpg.80412/ I do not have any other info...

Homework Statement Homework EquationsThe Attempt at a Solution I'm not getting the correct answers, here are my equations Node A: 80 = ix + i2 80 = Va/0.143 + (Va-(Vb+10))/0.2......1 Node B: 20 = iy-i2 20 = Vb/0.125 - (Va-(Vb+10))/0.2......2 Are these equations correct ?

Homework Statement Compute all the currents labeled using the mesh loop method. Homework Equations Parallel Resistors 1/Rt=1/R1+1/R2...+1/Ri Series Resistors R1+R2...+Ri The Attempt at a Solution My attempt at the kvl and kcl analysis, I think I did this wrong because I can't solve for...

I've only taken a basic circuits course and that was years ago. Can anyone help me get this one started? 1. Homework Statement Homework Equations KCL The Attempt at a Solution [/B] I'm not sure if I should use KCL right away or use Thevenin. Since I need to find the current through the 2...

Homework Statement Find ix and Valpha [/B] Homework Equations KCL KVL The Attempt at a Solution [/B]How do I determine the number of KCL and KVL equations? In this problem I am solving, there are 6 unknowns so I need 6 equations. I can write 4 independent KCL equations, 1 KVL at loop 1(to...

Homework Statement From the above circuit find VCB and VDG Know Data: VE = 0 (ground) Homework Equations KCL and Ohm's Law are used in Node Voltage Method. The Attempt at a Solution I decided I would determine the node voltages then work out VCB and VDG afterwards. 1. KCL and Ohm's law at...

< Moderator Note -- thread moved from the EE forum to the Homework Help forums >[/color] Please view the attached. The answers are: i1 0.1429 i2 0.4286 i3 0.2857 So how do I work this out? I assume you use kirchhoffs current law, can someone show me the step? Thanks :)